Customizing instance appearance

  • Release version: Australia
  • Updated March 12, 2026
  • 4 minutes to read
  • An administrator can change global CSS or system properties to alter the look and feel of the default instance interface. Functionality is not affected.

    For example, organizations often use multiple instances to separate development, testing, and production activities. To help users avoid accidentally changing the wrong instance, administrators can configure each with a visually distinct theme. Several approaches are available for defining an instance theme.

    CSS Properties

    Navigate to System Properties > CSS.

    The following properties are available through CSS Properties.

    Note:
    Colors are specified using predefined color names, RGB decimals, or RGB hexadecimals.
    • Banner text color
    • Banner and list caption background color
    • Font used in forms and lists (this is a global font setting)
    • Button styles (background color, border color, border width, text color)
    • Field status indicator colors (including the indicators for Changed, Mandatory Populated, Mandatory Unpopulated, and Read-only)
    • List cell vertical alignment
    • Navigator menu styles (text font size, background color, text color)
    • Header font name and size
    • List and form caption color override
    • Global text search background color (both for catalog results and knowledge base results)

    UI properties

    Navigate to System Properties > UI Properties.

    The following properties are available through UI Properties.

    • Icons used in the activity formatter
    • Background colors for Additional Comments and Work Notes
    • Button placement on forms
    • Icons used in the Task Activity formatter
    • Background colors for Incident Additional Comments and Work Notes

    CSS class support

    In Core UI (UI16), CSS properties and how they affect the platform UI change depending on the release.
    Note:
    Settings configured from the Basic Configuration UI16 page are not applicable to instances with Next Experience enabled.
    Table 1. Supported CSS classes
    CSS class Description How to configure
    $navpage-header-bg Header background color Navigate to System Properties > Basic Configuration UI16 > Header background color
    $navpage-header-color Color for header text and the global search icon Navigate to System Properties > Basic Configuration UI16 > Banner text color
    $navpage-header-button-color Color for logged in user name text, and the global search Connect, Help, and settings icons Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $navpage-header-divider-color Header divider color Navigate to System Properties > Basic Configuration UI16 > Header divider stripe color
    $navpage-button-color Color for the following icons in the sidebars
    • Expand/collapse
    • Create a conversation (in the Connect sidebar)
    • Open Connect workspace
    Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $navpage-button-color-hover Color for the following icons when a user points to the control:
    • Global search
    • Help
    • Settings
    • Clear text icon in the navigation filter
    Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $search-text-color Color of the search text, both in the navigation filter and the global search fields Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $navpage-nav-border Border color for the navigation filter and the conversation filter Navigate to System Properties > Basic Configuration UI16 > Border color for UI16
    $nav-highlight-main Highlights the module after the user has clicked it. In the Connect workspace, highlights the selected conversation. Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $subnav-background-color Background for expanded navigation items Navigate to System Properties > Basic Configuration UI16 > Navigation background expanded items
    $navpage-nav-bg Header and footer for navigator and sidebars. Navigate to System Properties > Basic Configuration UI16 > Navigation header/footer
    $navpage-nav-bg-sub Background for navigator and sidebars Navigate to System Properties > Basic Configuration UI16 > Background for navigators and sidebars
    $navpage-nav-color-sub Text color for modules in the main navigation Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $navpage-nav-mod-text-hover Text color when hovering over items in the main navigation Not supported
    $nav-hr-color Navigator separator color Navigate to System Properties > Basic Configuration UI16 > Navigation separator color
    $nav-highlight-bar-active Line under the active tab in the application navigator. This color is also used as part of the theme preview on the Themes tab under system settings. Navigate to System Properties > Basic Configuration UI16 > Navigation selected tab divider bar color
    $nav-highlight-bar-inactive Line under the inactive tabs in the application navigator Navigate to System Properties > Basic Configuration UI16 > Navigation unselected tab divider bar color
    $navpage-nav-selected-bg Navigation selected tab background color Navigate to System Properties > Basic Configuration UI16 > Navigation selected tab background color
    $navpage-nav-selected-color Currently selected Navigation tab icon color Navigate to System Properties > Basic Configuration UI16 > Currently selected Navigation tab color for UI16
    $navpage-nav-unselected-color Unselected navigation tab icon and favorite icons color Navigate to System Properties > Basic Configuration UI16 > Unselected navigation tab icon and favorite icons color
    $connect-latest-message Color of the currently selected message in Connect Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $nav-timeago-header-color Timestamp header backgrounds in History tab Not supported
    $navpage-nav-app-text Core content text color for items such as applications and the empty state text for the Connect sidebar. Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.
    $navpage-nav-app-text-hover Text color for a selected module Add the CSS property to the CSS field of a theme. For more information, see Create or customize a theme.